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Article: Topological transport in Dirac nodal-line semimetals
Title | Topological transport in Dirac nodal-line semimetals |
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Authors | |
Issue Date | 2018 |
Citation | Physical Review B, 2018, v. 97, n. 15, article no. 155439 How to Cite? |
Abstract | Topological nodal-line semimetals are characterized by one-dimensional Dirac nodal rings that are protected by the combined symmetry of inversion P and time-reversal T. The stability of these Dirac rings is guaranteed by a quantized ±π Berry phase and their low-energy physics is described by a one-parameter family of (2+1)-dimensional quantum field theories exhibiting the parity anomaly. Here we study the Berry-phase supported topological transport of PT-invariant nodal-line semimetals. We find that small inversion breaking allows for an electric-field-induced anomalous transverse current, whose universal component originates from the parity anomaly. Due to this Hall-like current, carriers at opposite sides of the Dirac nodal ring flow to opposite surfaces when an electric field is applied. To detect the topological currents, we propose a dumbbell device, which uses surface states to filter charges based on their momenta. Suggestions for experiments and device applications are discussed. |
Persistent Identifier | http://hdl.handle.net/10722/335013 |
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 1.345 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Rui, W. B. | - |
dc.contributor.author | Zhao, Y. X. | - |
dc.contributor.author | Schnyder, Andreas P. | - |
dc.date.accessioned | 2023-10-24T08:28:27Z | - |
dc.date.available | 2023-10-24T08:28:27Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Physical Review B, 2018, v. 97, n. 15, article no. 155439 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | http://hdl.handle.net/10722/335013 | - |
dc.description.abstract | Topological nodal-line semimetals are characterized by one-dimensional Dirac nodal rings that are protected by the combined symmetry of inversion P and time-reversal T. The stability of these Dirac rings is guaranteed by a quantized ±π Berry phase and their low-energy physics is described by a one-parameter family of (2+1)-dimensional quantum field theories exhibiting the parity anomaly. Here we study the Berry-phase supported topological transport of PT-invariant nodal-line semimetals. We find that small inversion breaking allows for an electric-field-induced anomalous transverse current, whose universal component originates from the parity anomaly. Due to this Hall-like current, carriers at opposite sides of the Dirac nodal ring flow to opposite surfaces when an electric field is applied. To detect the topological currents, we propose a dumbbell device, which uses surface states to filter charges based on their momenta. Suggestions for experiments and device applications are discussed. | - |
dc.language | eng | - |
dc.relation.ispartof | Physical Review B | - |
dc.title | Topological transport in Dirac nodal-line semimetals | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevB.97.161113 | - |
dc.identifier.scopus | eid_2-s2.0-85046859107 | - |
dc.identifier.volume | 97 | - |
dc.identifier.issue | 15 | - |
dc.identifier.spage | article no. 155439 | - |
dc.identifier.epage | article no. 155439 | - |
dc.identifier.eissn | 2469-9969 | - |
dc.identifier.isi | WOS:000430810700001 | - |